Pouring Rubber Molds
Measure out the amount of rubber you want to mix. Make sure you are going to have enough to completely fill your mold box.
Add (1) part of catalyst to every (10) parts of base.
Pour the catalyst into the base.
Mix thoroughly until an even color is achieved. Be sure to scrape the sides and bottom.
This is what it should look like when completely mixed.
Pouring rubber to make your molds is a snap. Just put your custom holds in your mold boxes and begin pouring the mixed rubber over them. Once your silicone rubber (base and catalyst) is mixed, simply pour the rubber in your mold box from one point allowing the rubber to flow naturally and fill the mold box.
Make sure to completely cover all the origionals with .25in of cilicone rubber. You don't have to fill your mold boxes all the way to the top as long as your custom holds are covered by .25in of rubber.
Finish off pouring your rubber, then wait overnight for it to cure before demolding.